Problem Using PS/2 Keyboard Port

actsby · 07-27-2007, 01:52 AM

I have designed small circuit using PS/2 port for communication with PC. Its easy to send data from my circuit to application(the data is treated as normal keypress)

but I don't know, How to send data from application (using C language) to PS/2 keyboard port ?

michaelk · 08-14-2007, 08:52 PM

Here is some basic information that might help.
The IO keyboard address is 0x60 for writing and reading, The status/command address is 0x64.

This website appears to be a very good reference on how the PS/2 host to keyboard interface works.

http://www.computer-engineering.org/ps2keyboard/

BTW just curious what is the function of your circuit?